Marcos Avilés Francisco Morán Narciso N. García Progressive Lower Trees of Wavelet Coefficients: Efficient Spatial and SNR Scalable Coding of 3D Models. 61-72 2005 conf/pcm/2005-1 PCM (1) http://dx.doi.org/10.1007/11581772_6 db/conf/pcm/pcm2005-1.html#AvilesMG05